Clayey Landslide Initiation and Acceleration Strongly Modulated by Soil Swelling
文献类型：期刊论文
| 作者 | Schulz, William H.1; Smith, Joel B.1; Wang, Gonghui2; Jiang, Yao2,3 ; Roering, Joshua J.4
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| 刊名 | GEOPHYSICAL RESEARCH LETTERS
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| 出版日期 | 2018-02-28 |
| 卷号 | 45期号:4页码:1888-1896 |
| ISSN号 | 0094-8276 |
| DOI | 10.1002/2017GL076807 |
| 英文摘要 | Largely unknown mechanisms restrain motion of clay-rich, slow-moving landslides that are widespread worldwide and rarely accelerate catastrophically. We studied a clayey, slow-moving landslide typical of thousands in Northern California, USA, to decipher hydrologic-mechanical interactions that modulate landslide dynamics. Similar to some other studies, observed pore-water pressures correlated poorly with landslide reactivation and speed. In situ and laboratory measurements strongly suggested that variable pressure along the landslide's lateral shear boundaries resulting from seasonal soil expansion and contraction modulated its reactivation and speed. Slope-stability modeling suggested that the landslide's observed behavior could be predicted by including transient swell pressure as a resistance term, whereas modeling considering only transient hydrologic conditions predicted movement five to six months prior to when it was observed. All clayey soils swell to some degree; hence, our findings suggest that swell pressure likely modulates motion of many landslides and should be considered to improve forecasts of clayey landslide initiation and mobility. |
| 语种 | 英语 |
| WOS记录号 | WOS:000427564300022 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://ir.imde.ac.cn/handle/131551/22859]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 通讯作者 | Schulz, William H. |
| 作者单位 | 1.US Geol Survey, Box 25046, Denver, CO 80225 USA 2.Kyoto Univ, Disaster Prevent Res Inst, Uji, Kyoto, Japan 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Sichuan, Peoples R China 4.Univ Oregon, Dept Geol Sci, Eugene, OR 97403 USA |
| 推荐引用方式 GB/T 7714 | Schulz, William H.,Smith, Joel B.,Wang, Gonghui,et al. Clayey Landslide Initiation and Acceleration Strongly Modulated by Soil Swelling[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(4):1888-1896. |
| APA | Schulz, William H.,Smith, Joel B.,Wang, Gonghui,Jiang, Yao,&Roering, Joshua J..(2018).Clayey Landslide Initiation and Acceleration Strongly Modulated by Soil Swelling.GEOPHYSICAL RESEARCH LETTERS,45(4),1888-1896. |
| MLA | Schulz, William H.,et al."Clayey Landslide Initiation and Acceleration Strongly Modulated by Soil Swelling".GEOPHYSICAL RESEARCH LETTERS 45.4(2018):1888-1896. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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